Seat and backrest for a medical stool



FIG. 1 is a perspective view of a seat and backrest for a medical stool, showing my new design; the broken lines are for environmental purposes only and form no part of the claimed design;

FIG. 2 is a side elevational view, the opposite side being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a seat and backrest for a medical stool, as shown and described. 